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use std::ops::{Deref, DerefMut};
use jabber::{connection::Tls, jabber_stream::bound_stream::BoundJabberStream};
use read::ReadControlHandle;
use sqlx::SqlitePool;
use tokio::{
sync::{mpsc, oneshot},
task::{JoinHandle, JoinSet},
};
use write::{WriteControlHandle, WriteHandle, WriteMessage};
use crate::UpdateMessage;
mod read;
pub(crate) mod write;
pub struct Supervisor {
connection_commands: mpsc::Receiver<SupervisorCommand>,
writer_crash: oneshot::Receiver<(WriteMessage, mpsc::Receiver<WriteMessage>)>,
reader_crash: oneshot::Receiver<(
SqlitePool,
mpsc::Sender<UpdateMessage>,
tokio::task::JoinSet<()>,
)>,
sender: mpsc::Sender<UpdateMessage>,
writer_handle: WriteControlHandle,
reader_handle: ReadControlHandle,
on_shutdown: oneshot::Sender<()>,
}
pub enum SupervisorCommand {
Disconnect,
// for if there was a stream error, require to reconnect
Reconnect,
}
impl Supervisor {
fn new(
connection_commands: mpsc::Receiver<SupervisorCommand>,
writer_crash: oneshot::Receiver<(WriteMessage, mpsc::Receiver<WriteMessage>)>,
reader_crash: oneshot::Receiver<(SqlitePool, mpsc::Sender<UpdateMessage>, JoinSet<()>)>,
sender: mpsc::Sender<UpdateMessage>,
writer_handle: WriteControlHandle,
reader_handle: ReadControlHandle,
on_shutdown: oneshot::Sender<()>,
) -> Self {
Self {
connection_commands,
writer_crash,
sender,
writer_handle,
reader_handle,
reader_crash,
on_shutdown,
}
}
async fn handle_command_message(&mut self, msg: SupervisorCommand) {}
async fn run(mut self) {
loop {
tokio::select! {
Some(msg) = self.connection_commands.recv() => {
self.handle_command_message(msg).await;
},
error = &mut self.writer_crash => {
},
error = &mut self.reader_crash => {
},
else => break,
}
}
self.on_shutdown.send(());
}
}
pub struct SupervisorHandle {
sender: SupervisorSender,
handle: JoinHandle<()>,
}
impl Deref for SupervisorHandle {
type Target = SupervisorSender;
fn deref(&self) -> &Self::Target {
&self.sender
}
}
impl DerefMut for SupervisorHandle {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.sender
}
}
#[derive(Clone)]
pub struct SupervisorSender {
sender: mpsc::Sender<SupervisorCommand>,
}
impl Deref for SupervisorSender {
type Target = mpsc::Sender<SupervisorCommand>;
fn deref(&self) -> &Self::Target {
&self.sender
}
}
impl DerefMut for SupervisorSender {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.sender
}
}
impl SupervisorHandle {
pub fn new(
streams: BoundJabberStream<Tls>,
update_sender: mpsc::Sender<UpdateMessage>,
db: SqlitePool,
on_shutdown: oneshot::Sender<()>,
) -> (WriteHandle, Self) {
let (command_sender, command_receiver) = mpsc::channel(20);
let (writer_error_sender, writer_error_receiver) = oneshot::channel();
let (reader_crash_sender, reader_crash_receiver) = oneshot::channel();
let (reader, writer) = streams.split();
let (write_handle, write_control_handle) =
WriteControlHandle::new(writer, writer_error_sender);
let jabber_reader_control_handle = ReadControlHandle::new(
reader,
reader_crash_sender,
db,
update_sender.clone(),
command_sender.clone(),
write_handle.clone(),
);
let actor = Supervisor::new(
command_receiver,
writer_error_receiver,
reader_crash_receiver,
update_sender,
write_control_handle,
jabber_reader_control_handle,
on_shutdown,
);
let handle = tokio::spawn(async move { actor.run().await });
(
write_handle,
Self {
sender: SupervisorSender {
sender: command_sender,
},
handle,
},
)
}
pub fn sender(&self) -> SupervisorSender {
self.sender.clone()
}
}
|
